Compilare: In file included from /usr/include/c++/12.2.1/istream:39, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:2: In member function 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long unsigned int) [with _CharT = char; _Traits = std::char_traits<char>]', inlined from 'int main()' at main.cpp:23:11: /usr/include/c++/12.2.1/ostream:206:25: warning: 'x' may be used uninitialized [-Wmaybe-uninitialized] 206 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:11:27: note: 'x' was declared here 11 | unsigned long long a, x, n, i; | ^